EN 45544-4:1999 工作场所.有毒气体和蒸气的直接检测和直接浓度测量用电气设备.第4部分:选择,安装,使用和维修的指南
Workplace Atmospheres - Electrical Apparatus Used for the Direct Detection and Direct Concentration Measurement of Toxic Gases and Vapours - Part 4: Guide for Selection, Installation, Use and Maintenance